Does this watch come with a resetting countdown timer

There is the ability to set a countdown timer. What do you mean by resetting? there is a start button and a stop button to use with it. When you hit Mode, the choices you then get are CHRONO, TIMR, INTTIMR, ALM 1, ALm2, ALM3. Other than the recurring alarms i guess i dont use a lot of these features. :-/

Is the timer loud on this watch when it goes off at the end of an interval?

Hi there, thanks for your enquiry. This watch style has a defaulted alarm melody chime when it reaches zero loud enough to notify you once countdown is done. For other enquiries you can call our customer service center at 800-448-4639 or send us an email at custserv@timex.com

Can countdown timer be set to repeat?

I didn’t buy this Timex Ironman watch for it’s timer so I never use that feature. For a correct answer to your question, I would contact the Timex directly.